The Model
TR-2000 electret microphone's frequency response has been
tailored with a broad rise centering in the upper
mid-range and a smooth roll-off below 500Hz. This careful
"shaping" optimizes communications
effectiveness by increasing the clarity of the received
signal, while retaining a pleasing, natural voice
reproduction quality.

NOISE
CANCELLING FEATURE

The Model TR-2000 uses
acoustic noise cancelling which was developed to allow
clear radio communications, in extremely high ambient
noise environments (such as cockpits of powerful piston
engine aircraft). Noise cancelling is accomplished by
allowing the rear of the microphone diaphragm, as well as
the front, to be exposed to the ambient noise field.
Since the front and rear sound waves differ in phase from
each other by 180 degrees, a highly effective
cancellation results. The ambient sound is substantially
prevented from being converted to an electrical analog,
thereby nearly eliminating it from the microphone output
signal.

SPRING-LOADED
FLEXIBLE BOOM

The Model
TR-2000's flexible boom may be bent anywhere along its
length, in any direction. The "mechanical
memory" provided by the spring-loaded feature allows
the boom to maintain its adjustment, even when
accidentally bumped of pushed.

LARGE,
PLUSH EARPADS
AND HEADBAND

Although the
Model TR-2000 boom microphone headset weighs only 11
ounces, the large, plush, foam-filled earpads reduce
background noise substantially, allowing the operator to
hear received signals clearly, even in very noisy
environments. The matching padded headband increases
comfort on the top of the head and imparts a luxurious
appearance to the unit.

COMPATIBILITY

The Model
TR-2000 microphone and earphones are compatible with
almost all modern amateur radio equipment - fixed,
portable, handheld or mobile. It also should work well
with many "vintage" transceivers, receivers and
transmitters. The TR-2000PC version is compatible with
nearly any personal computer, and simply plugs-in to
sound card on the back of the PC, via the two
pre-installed 3.5mm phone plugs. Plug and play for
internet telephony or other voice applications.

EASY,
STEP-BY-STEP ASSEMBLY INSTRUCTIONS

The kit
version of the Model TR-2000 is supplied with detailed
step-by-step instructions, written clearly, avoiding
electronic "jargon." These "check-off as
you go" instructions enable even a person with
minimal technical skills and experience to assemble the
product successfully, in just a few hours.

SPECIFICATIONS

MICROPHONE-NOISE
CANCELLING ELECTRET

OUTPUT LEVEL: - 72dB
IMPEDANCE: 600 Ohms, nominal
(may be used with microphone preamplifiers with
input impedance's in the range of approximately
250 Ohms to 500K Ohms.)
VOLTAGE REQUIREMENT: 1.5 to 10 V.D.C.
Normal voltage: 1.5 V.D.C.
(this voltage typically is derived from the radio, or may
be supplied by a battery or other external source.)
EARPHONE-MOVING COIL DYNAMIC EARSPEAKERS

Multiple radios? We now offer a plug/jack interchange
system for the TR-2000 assembled with connectors for
$15. Thereafter, adapters for additional radios are
available for $21, each.

PLEASE
NOTE THAT ONLINE ORDERING IS NOT AVAILABLE, AT THIS TIME.
PLEASE TELEPHONE US TOLL FREE AT 1-800-634-0094, OR
510-282-9300. OR CLICK HERE, PRINT THE ORDER FORM,
FILL IT OUT AND FAX IT TO US AT 510-633-9355.

CONNECTOR
KITS & CONNECTOR
INSTALLATION SERVICE

The Model TR-2000 headset,
both assembled and kit, are priced in their basic form
without connectors installed on the end of their five
foot dual coaxial cable. This gives the buyer an
opportunity to save the labor associated with connector
installation, by performing the task, himself.

For the
convenience of our customers, we stock connector kits for
many popular, late model radios. The kits consist of the
connector(s) and other small hardware items which may be
required to complete the installation. Prices for
connector kits are $10.00. Please check with us for
availability of a connector kit for your radio. Call us
toll free 1-800-634-0094.

For those
individuals who prefer to purchase the headset with
connectors already installed, we offer to completely
install connectors on the Model TR-2000, for your
"plug and play" installation on many popular,
modern radios. The total price for a headset with
connectors for your radio $58.95, or $68.95 for older
radios. The list of radios which we support with
connector installation service is constantly growing, so
please check with us on our toll free number, concerning
yours. 1-800-634-0094.

Total
price of a TR-2000 headset fully assembled, including
installed connectors for most popular modern radios is
now only $58.95 plus shipping and handling. Older radios
may require the addition of a battery and switch for
$10.00, additional.